./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:51:29,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:51:29,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:51:29,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:51:29,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:51:29,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:51:29,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:51:29,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:51:29,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:51:29,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:51:29,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:51:29,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:51:29,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:51:29,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:51:29,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:51:29,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:51:29,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:51:29,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:51:29,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:51:29,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:51:29,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:51:29,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:51:29,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:51:29,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:51:29,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:51:29,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:51:29,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:51:29,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:51:29,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:51:29,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:51:29,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:51:29,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:51:29,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:51:29,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:51:29,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:51:29,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:51:29,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:51:29,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:51:29,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:51:29,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:51:29,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:51:29,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:51:29,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:51:29,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:51:29,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:51:29,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:51:29,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:51:29,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:51:29,300 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:51:29,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:51:29,301 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:51:29,301 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:51:29,301 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:51:29,302 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:51:29,302 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:51:29,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:51:29,302 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:51:29,303 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:51:29,303 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:51:29,303 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:51:29,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:51:29,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:51:29,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:51:29,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:51:29,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:51:29,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:51:29,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:51:29,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:51:29,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:51:29,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:51:29,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:51:29,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:51:29,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:51:29,308 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:51:29,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:51:29,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:51:29,308 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:51:29,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:51:29,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:51:29,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:51:29,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 [2022-11-22 01:51:29,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:51:29,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:51:29,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:51:29,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:51:29,730 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:51:29,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2022-11-22 01:51:32,894 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:51:33,564 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:51:33,565 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2022-11-22 01:51:33,608 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/data/6afc4bebc/77f1b97437e842678dd17ff40c242a62/FLAG6f68da850 [2022-11-22 01:51:33,631 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/data/6afc4bebc/77f1b97437e842678dd17ff40c242a62 [2022-11-22 01:51:33,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:51:33,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:51:33,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:51:33,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:51:33,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:51:33,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:51:33" (1/1) ... [2022-11-22 01:51:33,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b675236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:33, skipping insertion in model container [2022-11-22 01:51:33,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:51:33" (1/1) ... [2022-11-22 01:51:33,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:51:33,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:51:36,167 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2022-11-22 01:51:36,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:51:36,222 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:51:36,546 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2022-11-22 01:51:36,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:51:36,711 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:51:36,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36 WrapperNode [2022-11-22 01:51:36,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:51:36,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:51:36,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:51:36,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:51:36,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:36,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:36,956 INFO L138 Inliner]: procedures = 347, calls = 1397, calls flagged for inlining = 224, calls inlined = 207, statements flattened = 3851 [2022-11-22 01:51:36,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:51:36,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:51:36,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:51:36,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:51:36,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:36,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:36,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:36,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:37,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:37,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:37,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:37,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:37,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:51:37,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:51:37,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:51:37,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:51:37,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (1/1) ... [2022-11-22 01:51:37,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:51:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:37,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:51:37,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:51:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-11-22 01:51:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-11-22 01:51:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:51:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:51:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:51:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:51:37,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:51:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:51:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2022-11-22 01:51:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2022-11-22 01:51:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_read_bd [2022-11-22 01:51:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_read_bd [2022-11-22 01:51:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:51:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:51:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:51:37,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:51:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 01:51:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_mdio_poll [2022-11-22 01:51:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_mdio_poll [2022-11-22 01:51:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-22 01:51:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-22 01:51:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:51:37,343 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:51:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:51:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:51:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_stop [2022-11-22 01:51:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_stop [2022-11-22 01:51:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:51:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_15 [2022-11-22 01:51:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_15 [2022-11-22 01:51:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_ack_irq [2022-11-22 01:51:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_ack_irq [2022-11-22 01:51:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:51:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:51:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:51:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:51:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:51:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 01:51:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 01:51:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:51:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:51:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-22 01:51:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-22 01:51:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:51:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_get_regs_len [2022-11-22 01:51:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_get_regs_len [2022-11-22 01:51:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_read [2022-11-22 01:51:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_read [2022-11-22 01:51:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-22 01:51:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-22 01:51:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:51:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_disable_rx_and_tx [2022-11-22 01:51:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_disable_rx_and_tx [2022-11-22 01:51:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_do_set_mac_address [2022-11-22 01:51:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_do_set_mac_address [2022-11-22 01:51:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_enable_rx_and_tx [2022-11-22 01:51:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_enable_rx_and_tx [2022-11-22 01:51:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_init_ring [2022-11-22 01:51:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_init_ring [2022-11-22 01:51:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure devm_ioremap_nocache [2022-11-22 01:51:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_ioremap_nocache [2022-11-22 01:51:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:51:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:51:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:51:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:51:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:51:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:51:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure __rounddown_pow_of_two [2022-11-22 01:51:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __rounddown_pow_of_two [2022-11-22 01:51:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:51:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:51:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:51:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:51:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:51:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:51:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:51:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:51:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:51:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:51:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:51:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-22 01:51:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-22 01:51:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_interrupt [2022-11-22 01:51:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_interrupt [2022-11-22 01:51:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:51:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:51:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:51:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:51:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:51:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:51:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:51:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:51:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:51:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_probe [2022-11-22 01:51:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_probe [2022-11-22 01:51:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:51:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure __devm_request_region [2022-11-22 01:51:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __devm_request_region [2022-11-22 01:51:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_resume [2022-11-22 01:51:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_resume [2022-11-22 01:51:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:51:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:51:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 01:51:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 01:51:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:51:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:51:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 01:51:37,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 01:51:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:51:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 01:51:37,362 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 01:51:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_write_bd [2022-11-22 01:51:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_write_bd [2022-11-22 01:51:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:51:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:51:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:51:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:51:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_write [2022-11-22 01:51:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_write [2022-11-22 01:51:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:51:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:51:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:51:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:51:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-22 01:51:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-22 01:51:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_enable_irq [2022-11-22 01:51:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_enable_irq [2022-11-22 01:51:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_open [2022-11-22 01:51:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_open [2022-11-22 01:51:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:51:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:51:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_disable_irq [2022-11-22 01:51:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_disable_irq [2022-11-22 01:51:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:51:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:51:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_remove [2022-11-22 01:51:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_remove [2022-11-22 01:51:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:51:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:51:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:51:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-22 01:51:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-22 01:51:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:51:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:51:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_tx_timeout [2022-11-22 01:51:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_tx_timeout [2022-11-22 01:51:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:51:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:51:38,195 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:51:38,198 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:51:38,449 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:51:56,735 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:51:56,902 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:51:57,895 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:51:57,896 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-22 01:51:57,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:51:57 BoogieIcfgContainer [2022-11-22 01:51:57,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:51:57,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:51:57,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:51:57,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:51:57,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:51:33" (1/3) ... [2022-11-22 01:51:57,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d379033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:51:57, skipping insertion in model container [2022-11-22 01:51:57,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:36" (2/3) ... [2022-11-22 01:51:57,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d379033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:51:57, skipping insertion in model container [2022-11-22 01:51:57,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:51:57" (3/3) ... [2022-11-22 01:51:57,919 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2022-11-22 01:51:57,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:51:57,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:51:58,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:51:58,055 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d2a7bcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:51:58,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:51:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 961 states, 597 states have (on average 1.3299832495812396) internal successors, (794), 611 states have internal predecessors, (794), 299 states have call successors, (299), 65 states have call predecessors, (299), 64 states have return successors, (292), 290 states have call predecessors, (292), 292 states have call successors, (292) [2022-11-22 01:51:58,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 01:51:58,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:58,084 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:58,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:51:58,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:58,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2043535415, now seen corresponding path program 1 times [2022-11-22 01:51:58,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:58,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656171445] [2022-11-22 01:51:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:58,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-22 01:51:59,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:59,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656171445] [2022-11-22 01:51:59,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656171445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:59,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:59,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:51:59,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52513731] [2022-11-22 01:51:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:59,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:59,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:59,280 INFO L87 Difference]: Start difference. First operand has 961 states, 597 states have (on average 1.3299832495812396) internal successors, (794), 611 states have internal predecessors, (794), 299 states have call successors, (299), 65 states have call predecessors, (299), 64 states have return successors, (292), 290 states have call predecessors, (292), 292 states have call successors, (292) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:52:01,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:04,557 INFO L93 Difference]: Finished difference Result 2778 states and 4015 transitions. [2022-11-22 01:52:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:52:04,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 137 [2022-11-22 01:52:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:04,587 INFO L225 Difference]: With dead ends: 2778 [2022-11-22 01:52:04,587 INFO L226 Difference]: Without dead ends: 1830 [2022-11-22 01:52:04,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:52:04,599 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1306 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:04,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 2495 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 516 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 01:52:04,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2022-11-22 01:52:04,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1830. [2022-11-22 01:52:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1147 states have (on average 1.3269398430688752) internal successors, (1522), 1175 states have internal predecessors, (1522), 557 states have call successors, (557), 126 states have call predecessors, (557), 125 states have return successors, (554), 550 states have call predecessors, (554), 554 states have call successors, (554) [2022-11-22 01:52:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2633 transitions. [2022-11-22 01:52:04,801 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2633 transitions. Word has length 137 [2022-11-22 01:52:04,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:04,803 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 2633 transitions. [2022-11-22 01:52:04,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:52:04,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2633 transitions. [2022-11-22 01:52:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-22 01:52:04,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:04,827 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:04,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:52:04,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:04,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash -345727484, now seen corresponding path program 1 times [2022-11-22 01:52:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:04,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232909155] [2022-11-22 01:52:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2022-11-22 01:52:05,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232909155] [2022-11-22 01:52:05,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232909155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:05,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:05,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:52:05,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130565390] [2022-11-22 01:52:05,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:05,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:52:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:52:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:05,938 INFO L87 Difference]: Start difference. First operand 1830 states and 2633 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:52:07,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:12,850 INFO L93 Difference]: Finished difference Result 3641 states and 5282 transitions. [2022-11-22 01:52:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:52:12,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 175 [2022-11-22 01:52:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:12,882 INFO L225 Difference]: With dead ends: 3641 [2022-11-22 01:52:12,882 INFO L226 Difference]: Without dead ends: 3637 [2022-11-22 01:52:12,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:52:12,887 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1320 mSDsluCounter, 3843 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 5220 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:12,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 5220 Invalid, 1032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1029 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-22 01:52:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2022-11-22 01:52:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3633. [2022-11-22 01:52:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 2280 states have (on average 1.3285087719298245) internal successors, (3029), 2337 states have internal predecessors, (3029), 1102 states have call successors, (1102), 253 states have call predecessors, (1102), 250 states have return successors, (1144), 1086 states have call predecessors, (1144), 1096 states have call successors, (1144) [2022-11-22 01:52:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5275 transitions. [2022-11-22 01:52:13,109 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5275 transitions. Word has length 175 [2022-11-22 01:52:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:13,110 INFO L495 AbstractCegarLoop]: Abstraction has 3633 states and 5275 transitions. [2022-11-22 01:52:13,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:52:13,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5275 transitions. [2022-11-22 01:52:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-22 01:52:13,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:13,117 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:13,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:52:13,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:13,118 INFO L85 PathProgramCache]: Analyzing trace with hash -949731742, now seen corresponding path program 1 times [2022-11-22 01:52:13,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:13,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257076499] [2022-11-22 01:52:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:13,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2022-11-22 01:52:14,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:14,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257076499] [2022-11-22 01:52:14,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257076499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:14,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:14,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:52:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998544999] [2022-11-22 01:52:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:52:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:52:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:14,151 INFO L87 Difference]: Start difference. First operand 3633 states and 5275 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 01:52:16,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:20,217 INFO L93 Difference]: Finished difference Result 3639 states and 5280 transitions. [2022-11-22 01:52:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:52:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 180 [2022-11-22 01:52:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:20,248 INFO L225 Difference]: With dead ends: 3639 [2022-11-22 01:52:20,248 INFO L226 Difference]: Without dead ends: 3614 [2022-11-22 01:52:20,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:52:20,255 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 1314 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:20,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 3303 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 771 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 01:52:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-11-22 01:52:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3614. [2022-11-22 01:52:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 2272 states have (on average 1.3283450704225352) internal successors, (3018), 2327 states have internal predecessors, (3018), 1093 states have call successors, (1093), 250 states have call predecessors, (1093), 248 states have return successors, (1138), 1080 states have call predecessors, (1138), 1090 states have call successors, (1138) [2022-11-22 01:52:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5249 transitions. [2022-11-22 01:52:20,499 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5249 transitions. Word has length 180 [2022-11-22 01:52:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:20,500 INFO L495 AbstractCegarLoop]: Abstraction has 3614 states and 5249 transitions. [2022-11-22 01:52:20,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 01:52:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5249 transitions. [2022-11-22 01:52:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-22 01:52:20,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:20,525 INFO L195 NwaCegarLoop]: trace histogram [29, 22, 22, 22, 22, 22, 22, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:20,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:52:20,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash -285113565, now seen corresponding path program 1 times [2022-11-22 01:52:20,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:20,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537746363] [2022-11-22 01:52:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:20,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked. [2022-11-22 01:52:21,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:21,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537746363] [2022-11-22 01:52:21,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537746363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:21,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:21,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:52:21,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289556753] [2022-11-22 01:52:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:21,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:52:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:21,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:52:21,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:52:21,499 INFO L87 Difference]: Start difference. First operand 3614 states and 5249 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-22 01:52:23,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:27,117 INFO L93 Difference]: Finished difference Result 10156 states and 14671 transitions. [2022-11-22 01:52:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:52:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 444 [2022-11-22 01:52:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:27,167 INFO L225 Difference]: With dead ends: 10156 [2022-11-22 01:52:27,167 INFO L226 Difference]: Without dead ends: 6567 [2022-11-22 01:52:27,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:52:27,188 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1036 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:27,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 2439 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 616 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 01:52:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6567 states. [2022-11-22 01:52:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6567 to 6551. [2022-11-22 01:52:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6551 states, 4075 states have (on average 1.3013496932515338) internal successors, (5303), 4186 states have internal predecessors, (5303), 1991 states have call successors, (1991), 486 states have call predecessors, (1991), 484 states have return successors, (2038), 1962 states have call predecessors, (2038), 1988 states have call successors, (2038) [2022-11-22 01:52:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 9332 transitions. [2022-11-22 01:52:27,655 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 9332 transitions. Word has length 444 [2022-11-22 01:52:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:27,656 INFO L495 AbstractCegarLoop]: Abstraction has 6551 states and 9332 transitions. [2022-11-22 01:52:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-22 01:52:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 9332 transitions. [2022-11-22 01:52:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-11-22 01:52:27,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:27,770 INFO L195 NwaCegarLoop]: trace histogram [30, 22, 22, 22, 22, 22, 22, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:27,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:52:27,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:27,772 INFO L85 PathProgramCache]: Analyzing trace with hash 384191962, now seen corresponding path program 1 times [2022-11-22 01:52:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333351866] [2022-11-22 01:52:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:27,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2375 trivial. 0 not checked. [2022-11-22 01:52:28,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:28,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333351866] [2022-11-22 01:52:28,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333351866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:28,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:28,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:52:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738310964] [2022-11-22 01:52:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:28,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:52:28,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:52:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:52:28,795 INFO L87 Difference]: Start difference. First operand 6551 states and 9332 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-22 01:52:30,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:34,901 INFO L93 Difference]: Finished difference Result 12790 states and 18159 transitions. [2022-11-22 01:52:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:52:34,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 454 [2022-11-22 01:52:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:34,946 INFO L225 Difference]: With dead ends: 12790 [2022-11-22 01:52:34,947 INFO L226 Difference]: Without dead ends: 6264 [2022-11-22 01:52:34,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:52:34,976 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 1225 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:34,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 2818 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-22 01:52:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2022-11-22 01:52:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 6253. [2022-11-22 01:52:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6253 states, 3953 states have (on average 1.2972426005565394) internal successors, (5128), 4057 states have internal predecessors, (5128), 1813 states have call successors, (1813), 488 states have call predecessors, (1813), 486 states have return successors, (1858), 1783 states have call predecessors, (1858), 1810 states have call successors, (1858) [2022-11-22 01:52:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6253 states to 6253 states and 8799 transitions. [2022-11-22 01:52:35,370 INFO L78 Accepts]: Start accepts. Automaton has 6253 states and 8799 transitions. Word has length 454 [2022-11-22 01:52:35,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:35,371 INFO L495 AbstractCegarLoop]: Abstraction has 6253 states and 8799 transitions. [2022-11-22 01:52:35,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-22 01:52:35,372 INFO L276 IsEmpty]: Start isEmpty. Operand 6253 states and 8799 transitions. [2022-11-22 01:52:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-11-22 01:52:35,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:35,403 INFO L195 NwaCegarLoop]: trace histogram [30, 22, 22, 22, 22, 22, 22, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:35,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:52:35,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:35,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash 781695200, now seen corresponding path program 1 times [2022-11-22 01:52:35,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:35,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827311866] [2022-11-22 01:52:35,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:35,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2394 trivial. 0 not checked. [2022-11-22 01:52:36,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:36,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827311866] [2022-11-22 01:52:36,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827311866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:36,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:36,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:52:36,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375077994] [2022-11-22 01:52:36,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:36,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:52:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:52:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:52:36,168 INFO L87 Difference]: Start difference. First operand 6253 states and 8799 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-22 01:52:38,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:42,328 INFO L93 Difference]: Finished difference Result 14666 states and 20683 transitions. [2022-11-22 01:52:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:52:42,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 459 [2022-11-22 01:52:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:42,395 INFO L225 Difference]: With dead ends: 14666 [2022-11-22 01:52:42,395 INFO L226 Difference]: Without dead ends: 8801 [2022-11-22 01:52:42,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:52:42,426 INFO L413 NwaCegarLoop]: 2084 mSDtfsCounter, 1223 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:42,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 3155 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 778 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 01:52:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8801 states. [2022-11-22 01:52:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8801 to 8790. [2022-11-22 01:52:43,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 5578 states have (on average 1.2981355324489063) internal successors, (7241), 5725 states have internal predecessors, (7241), 2521 states have call successors, (2521), 692 states have call predecessors, (2521), 690 states have return successors, (2589), 2478 states have call predecessors, (2589), 2518 states have call successors, (2589) [2022-11-22 01:52:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 12351 transitions. [2022-11-22 01:52:43,084 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 12351 transitions. Word has length 459 [2022-11-22 01:52:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:43,085 INFO L495 AbstractCegarLoop]: Abstraction has 8790 states and 12351 transitions. [2022-11-22 01:52:43,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-22 01:52:43,086 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 12351 transitions. [2022-11-22 01:52:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-22 01:52:43,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:43,124 INFO L195 NwaCegarLoop]: trace histogram [32, 22, 22, 22, 22, 22, 22, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:43,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:52:43,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:43,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:43,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1387640172, now seen corresponding path program 1 times [2022-11-22 01:52:43,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:43,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377282199] [2022-11-22 01:52:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:43,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2599 trivial. 0 not checked. [2022-11-22 01:52:45,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:45,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377282199] [2022-11-22 01:52:45,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377282199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:45,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:45,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:52:45,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901671387] [2022-11-22 01:52:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:45,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:52:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:52:45,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:52:45,819 INFO L87 Difference]: Start difference. First operand 8790 states and 12351 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-22 01:52:47,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:51,466 INFO L93 Difference]: Finished difference Result 17224 states and 24436 transitions. [2022-11-22 01:52:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:52:51,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 500 [2022-11-22 01:52:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:51,513 INFO L225 Difference]: With dead ends: 17224 [2022-11-22 01:52:51,513 INFO L226 Difference]: Without dead ends: 8822 [2022-11-22 01:52:51,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:51,552 INFO L413 NwaCegarLoop]: 1098 mSDtfsCounter, 10 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:51,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3267 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 785 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 01:52:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2022-11-22 01:52:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 8814. [2022-11-22 01:52:52,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8814 states, 5598 states have (on average 1.2970703822793854) internal successors, (7261), 5749 states have internal predecessors, (7261), 2521 states have call successors, (2521), 692 states have call predecessors, (2521), 694 states have return successors, (2594), 2478 states have call predecessors, (2594), 2518 states have call successors, (2594) [2022-11-22 01:52:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 12376 transitions. [2022-11-22 01:52:52,288 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 12376 transitions. Word has length 500 [2022-11-22 01:52:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:52,289 INFO L495 AbstractCegarLoop]: Abstraction has 8814 states and 12376 transitions. [2022-11-22 01:52:52,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-22 01:52:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 12376 transitions. [2022-11-22 01:52:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-11-22 01:52:52,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:52,327 INFO L195 NwaCegarLoop]: trace histogram [32, 22, 22, 22, 22, 22, 22, 13, 13, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:52,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:52:52,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2049974854, now seen corresponding path program 1 times [2022-11-22 01:52:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597633766] [2022-11-22 01:52:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 38 proven. 20 refuted. 0 times theorem prover too weak. 2635 trivial. 0 not checked. [2022-11-22 01:52:55,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:55,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597633766] [2022-11-22 01:52:55,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597633766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:52:55,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265813596] [2022-11-22 01:52:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:55,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:52:55,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:52:55,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:52:55,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047f8721-2a75-4dcf-9b12-03526c9282e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:52:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:57,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 4793 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 01:52:57,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 1346 proven. 23 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2022-11-22 01:53:00,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 2633 trivial. 0 not checked. [2022-11-22 01:53:01,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265813596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:01,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1994451263] [2022-11-22 01:53:02,039 INFO L159 IcfgInterpreter]: Started Sifa with 234 locations of interest [2022-11-22 01:53:02,039 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:53:02,045 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:53:02,051 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:53:02,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:55:55,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1352 treesize of output 1151 [2022-11-22 01:58:32,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1352 treesize of output 1151 [2022-11-22 01:58:32,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 690 treesize of output 651 [2022-11-22 02:05:43,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:05:43,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7